Realty firm DLF's rental arm DCCDL has posted an 11 per cent annual increase in office rental income to Rs 942 crore during the first quarter of this fiscal on better demand for its premium workspace. DLF Cyber City Developers Ltd (DCCDL) is a joint venture between DLF and Singapore sovereign wealth fund GIC. DLF holds a 66.67 per cent stake, while the GIC has a 33.33 per cent stake in DCCDL.